Installation of a shaft in a bearing with a self-extracting nut

摘要

A shaft (8) in the engine (1) includes end fixed in a coupling by using a cylindrical nut. A slotted stop ring is fitted in an annular groove on the external peripheral side of the nut. The stop ring axially abuts the coupling when a trunnion (10) is screwed into the nut from a side opposite to the shaft. Removal of the trunnion is permitted by unscrewing the nut. Independent claims are included for the following: (1) method for installing upstream end of trunnion of high pressure compressor in bearing of engine; and (2) method of removing trunnion of compressor from bearing of engine.